<!DOCTYPE html>
<html><head>
<title>Testcase #2 for bug 370713</title>
<script>
function boom() {
  document.getElementById('tbody').appendChild(document.createElement('tr'));
}

window.addEventListener("load", boom, false);
</script>
</head>
<body><table style="border-collapse:collapse"><tbody id="tbody"><tr><td></td></tr><tr></tr></tbody></table></body>
</html>
